Window-shade fixture.



J. M. GAMBON.

WINDOW SHADE FIXTURE.

APPLICATION FILED Amzo, 1914.

319134932@ mama Apr. 6, 1915.

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WINDOW SHADE FIXTURE.

APPLxcATloN FILED Anzo. 1914.

193i, S@ Patented Apr. 6, 1915.

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TOHN M. GAMBON, 0F ST.

LOUIS, MISSOURI, ASSIGNOR 0F ONE-FOURTH TO WILLIAM C. TIEMAN, 0F ST.LOUIS, MISSOURI.

Specification of Letters Patent.

Application iled April 20, 19111. Serial No. 833,023.

T0 all whom t may concern:

Be it known that 1, JOHN M. GAMBON, a citizen of the United States, anda resident of the city of St. Louis and State of Mlssouri, have inventeda new and useful lmprovement in Window-Shade Fixtures, of which thefollowing is a specification.

My invention relates to window shade luixtures and particularly to thattype which holds the shade in position at any height to which it israised.

Among the principal objects of my 1nvention is to provide a simple andinexpensive window shade fixture which will keep the shade from saggingin or out at any point to which it is raised and which will guide theshade so that it will wind andv unwind evenly. i l Further objects areto Aattain certain other advantages, as will more fullyI appearhereinafter.

The invention consists in the parts and in the-arrangements andcombinations of parts as will be set forth more lfully hereinafter.

ln the accompanying drawings, which form part of this speciication, andin which like reference characters refer to like parts throughout theseveral views, Figure 1 1s a front elevation of a shade fixtureembodying my invention showingrv it applied to a car window; Fig. 2 isan end elevation of the shade xture shown in 1, the window and parts ofits casing being shown in section; Fig. 3 is an enlarged front elevationof the roller of the shade fixture shown in Fig. 1; Fig. t is a detailsection of the tension pulley and its associate parts taken on the line4.-4 on Fig. 6; Fig. 5 is a section on the line 5-5 on Fig. 6; Fig. 6 isa section on the line 6-6 on Fig. 5; and Fig. 7 is a detail diametricsection through one end of the Shade roller. i K ,Y While for thepurpose of illustration l have shown my improved shade xture applied toa shade especially adapted for carV windows, it is to be understood thatmy invention is not limited to this use but may be used on any othertype of window or door.

In the construction which l have shown,

a shade 1 is fastened at one end to a roller 2 and is wound upon thisroller lin the `ordi- -nary way. Fitted over each end of the roller 1 isa hollow Adrum 3 which is fastened thereto by nails or screws L1. Theouter circumferential surface ofthe drum 3 is conical with the diameterof its outer end corresponding to the diameter of the roller 2 togetherwith the shade 1 fully wound thereon,

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and the diameter of its inner end correspondi ing to the diameter of theroller 2 together with the shade when it is fully unwound from theroller. In the conical outer surface of the drum 3 is a `helicahgroove5, which has the same'number of turns between the Iouter'and inner endsof the drum as there fastened to the outer end of the drum 3 in anysuitable manner and is engaged in the groove 5. The drum 3 is providedwith an integral pin 7 in the center of its outer face. Thepins 7 aremounted in vertical slots 8 in the brackets 9 which are fastened byscrews or nails l0 to the inside faces ofthe sides 11 of the windowcasing.

To the lower or free end of the-shade 1 is fastened a rod 12, the endsof which extend beyond the sides of the shade into grooves 13 in theinside faces of the sides 11. rlhe grooves 13 extend from the top to thebottom of thesides 11. .Each end of the rod 12 has a slit 14 thereinextending a short distance is a bracket 16 which is fastened by screws`or nails 17 to the inside face of the side 11 and'which has 'two arms18 and 19 vextending at right angles to the side 11. rlhrough the arm 18passes a screw-threaded rod 20 which has at one end'a knurled head 21and a knurled lock nut 22 and which is fastened at 5 the other end toone end of a tension spring 23. The other end of the spring 23 is hookedover a hook 24 secured in a stirrup 25. Jour- `naled in the stirrup 25is a grooved pulley 26 about which the cord 6 passes. ln the arm 19 aretwo holes 27 for the cord 6 to pass through. The arm 19 is on a level'with the top face of a hinged board 28 which, vin this instance, formsthe window sill. The hinged board 26 has anotch 29 cut along each edgeto permit its ends to pass by the arms 19 of the brackets 16.

In the operation of 'my improved shade fixture, asthe shade 1 is loweredby pulling upon the rodv 12 in the usual manner, and as the shade 1unrolls from the roller 2, the

6 which may result from stretching. The

tension of these springs 23 can be adjusted by turning the lock nut 22and the head 21. In case a strong side pressure is placed upon the shade1 suflicient to overcome the tension of the springs 23, the pulleys 26will hit the under sides of the arms 19 and prevent the shade fromsagging beyond a certain point. The friction of the parts holds theshade 1 in any position that it is put. Theshade 1 will wind or Vunwindevenly from the roller 2, and one end of the rod 12 cannot be raisedhigher than the other end so as to bind it, because each end of the rod12 is connected to 'one end of the roller 2, and as one end of the rod12 is moved it turns both ends of the roller 2 the-same amount andconsequently moves the opposite end of the rod 12 also the same amount.

It is apparent that various changes can be made in the particularconstruction which I have shown and described without departing from thespirit of my invention, and I do not wish, therefore, to be limited tothis exact construction.

What I claim is:

1. In a shade fixture, a shade roller, a shade adapted to wind on saidroller, a conical drum secured te each end of said roller, and having ahelical groove in its circumferential face, a rod secured to the freeend of said shade, pulleys connected by springs to the Window casingnear the bottom thereof, and a cord secured at one end to each drum andadapted to wind in said groove toward the smaller end of said drum, eachcord passing around one of said pulleys and connected at its other endto the corresponding end of said rod, said springs operating to holdsaid cords taut.

2. In a shade fixture, a shade roller, a shade adapted to wind on saidroller, said roller having a conical drum at each end thereof, each drumhaving a helical groove in its circumferential face, a rod secured tothe free end of said shade and having its ends fitting into grooves inthe sides of the window casing, a cord operatively connected at one endto each drum, to wind or unwind as said shade is unwound or woundrespectively, said cords in Winding on said drums moving toward thesmaller ends of said drums, and a pulley over which each cord passes,the other end of each cord being connected to the corresponding end ofsaid rod.

3. In a shade fixture, a shade roller, a shade adapted to wind on saidroller, said roller having a conical drum near each end thereof, eachdrum having a helical groove in its circumferential face, a rod securedto the free end of said shade, a pulley connected by a tension spring tothe window casing near the bottom of each side thereof, a cordoperatively connected at one end to each drum and arranged to wind on orunwind from said drum as said shade is unwound or wound respectively,said cords in winding on said drums moving toward the smaller ends ofsaid drums, each cord being connected at its other end to thecorresponding end of said rod, and means for limiting the upwardmovement of each pulley.

4. In a shade fixture, a Shade roller, a shade adapted to wind on saidroller, a conical grooved drum fastened to each end of said roller, acord secured at one end to each drum and connected at its other end tothe corresponding side of the free end of said shade, said cords windingon or unwinding .from said drums as said shade un- Winds or windsrespectively, said cords in winding on said drums moving toward thesmaller ends of said drums, and means for guiding each cord between itsends.

Signed at St. Louis, Missouri, this 18th day of April, 1914.

JOHN M. GAMBON.

IVlitnesses:

NE1L D. PRESTON, MARTHA A. SHELTON.

